In June 2011, the new Tamil Nadu government led by Jayalalithaa filed a petition in Supreme Court seeking the declaration of the 1974 and 1976 agreements between India and Sri Lanka on ceding of Katchatheevu to Sri Lanka as unconstitutional.
The court ruled in Berubari case that cession of Indian Territory to another country had to be ratified by parliament through amendment of the constitution.
Katchatheevu was ceded to Sri Lanka in violation of court orders under the 1974 and 1976 agreements without seeking approval of two Houses of Parliament.
